75660901 has 2 divisors, whose sum is σ = 75660902. Its totient is φ = 75660900.

The previous prime is 75660811. The next prime is 75660911. The reversal of 75660901 is 10906657.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73017025 + 2643876 = 8545^2 + 1626^2 .

It is an emirp because it is prime and its reverse (10906657) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75660901 - 2⁷ = 75660773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75660911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37830450 + 37830451.

It is an arithmetic number, because the mean of its divisors is an integer number (37830451).

Almost surely, 2^75660901 is an apocalyptic number.

It is an amenable number.

75660901 is a deficient number, since it is larger than the sum of its proper divisors (1).

75660901 is an equidigital number, since it uses as much as digits as its factorization.

75660901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 75660901 is about 8698.3274829130. The cubic root of 75660901 is about 422.9514351263.

The spelling of 75660901 in words is "seventy-five million, six hundred sixty thousand, nine hundred one".